Robert Boschgmbh

Wolfgang Hoptner

Egbert Perenthaler

Helmut Gross

Helmut Denz

Winfried Moser

Klemens Grieser

Udo Zucker

Gerhard Lotterbach

Gunther Kaiser

Jan F Van Woudenberg

Christian Klinke

Helmut Schwarz

Klaus Bottcher

Karl-Heinz Gerlings

In a cylinder-selective injection system for an internal combustion engine, there are cylinder-selective injection suppressions. Subsequent to the suppressions, restoring added quantities specific to an individual cylinder are generated, whose initial value is dependent upon the number of suppressed injections for the cylinder in question, and whose notching-down to zero is dependent upon the number of injections of the cylinder that have taken place after completion of the suppression.

Cylinder-selective injection system

Fuel injection process

Process for fuel metering

A method and apparatus for data exchange between a master microprocessor and a slave microprocessor, in which the connection is a parallel bus and the data exchange requires a minimum of time. For this purpose, the data are transmitted in a predetermined sequence and in which the transmission-start identifier is a signal train generated by the master processor which is specifically associated with data transmission. Preferably, a master processor and a slave processor are interconnected by the parallel data bus, with buffer memories, such as latches, interposed. A toggle flip-flop is connected to the interrupt input of the slave processor in such a way that merely placing a specific instruction (i.e. command+data) on the bus simultaneously notifies the slave processor to prepare for the exchange of data, thereby saving time.

Method and apparatus for data exchange between microprocessors

Growing community of inventors

Uhingen, Germany

Wolfgang Hoptner